Say nothing.
For an hour.
A chair, a table and a door you close.
For €18, nothing in the room will ask how you are finding it.

One hour / €18
Sound-isolated rooms in Milan. A chair, a table, a physical door. Devices can be placed outside by you. There is no occupancy inference inside the room.
Task-free compute arrangements at Quiet Hours. Unrecorded human conversations at Off Script.